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Cause-and-Effect DiagramStat > Quality Tools > Cause-and-Effect
Use a cause-and-effect (fishbone or Ishikawa) diagram to organize brainstorming information about potential causes of a problem. Diagramming helps you to see relationships among potential causes. You can draw a blank diagram, or a diagram filled in as much as you like, including sub-branches. Although there is no "correct" way to construct a fishbone diagram, some types lend themselves well to many different situations.
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You can change or add branches or sub-branches after you create a cause-and-effect diagram. See Add/ Change Branches. |
Causes
In column: Choose if the causes are listed in a column, then enter the list of causes for the corresponding branch of the diagram. Entries in the columns can be up to 72 characters wide. Odd branches are on top (5, 3, then 1, left to right), and even branches are on the bottom (6, 4, then 2). To display diagram with the main branches but no causes, do not select any columns.
Constants: Choose to enter the causes as constants, then type the list of causes for the corresponding branch of the diagram. Use a blank space between causes. If a cause contains multiple words, use double quotes around the words. Odd branches are on top (5, 3, then 1, left to right), and even branches are on the bottom (6, 4, then 2). To display diagram with the main branches but no causes, do not select any columns.
Label: Type the label you want to display to change the default branch labels. By default, the labels for branches 1 through 6 are (in order) Personnel, Machines, Materials, Methods, Measurements, and Environment. Odd branches are on top (5, 3, then 1, left to right), and even branches are on the bottom (6, 4, then 2). To display a blank diagram, check Do not label branches.
Sub: Click to add sub-branches for the corresponding branch.
Effect: Type the desired text to display a label for the effect or problem that you are trying to solve. The text is displayed to the right of the diagram. You may use up to 72 characters.
Title: Type the desired text to replace the default title with your own custom title.
Do not label the branches: Check to suppress the labeling of branches.
Do not display empty branches: Check to suppress empty branches for which you have not specified data.